TM1 Web is great to build TM1 applications but it has its limits. There are many application features which can’t easily be authored in Excel, which business users want and need...such as Search bar, Sort and Filter the table or do paging. All these features and more come as standard inclusions with Canvas.

Cubewise decided that we wanted to give traditional TM1 developers / system administrators the ability
to build beautiful dashboards and planning applications using their existing TM1 knowledge. Canvas was born.http://www.canvasfortm1.com/

As a TM1 developer, Canvas gives you the opportunity to learn a new skill. Learning HTML will provide you with a skill that will always be in fashion, the internet is not going to disappear anytime in the near future!!
If you want to see how TM1 looks like in HTML, you should have a look at this article:http://www.canvasfortm1.com/blogs/2016/ ... l-with-tm1

For more information about Canvas, you can reach us through the Canvas website.

Yes Canvas has write back facility to TM1, it connects to TM1 using the TM1 REST API. Canvas is cell based oriented, it has a similar function has the DBRW which is called tm1-ui-dbr. With the tm1-ui-dbr, you can Write/Read to a TM1 cell. What is more is that you can even add a validation to the cell as it is shown at the bottom of the canvas features page:https://code.cubewise.com/canvas-features/
or in the following video you can see an example of Canvas Timesheet application:https://www.youtube.com/watch?v=kHJPYd-Ps_E